react facebook code example

Example 1: what is react

This is a formatted version of Komadori's answer 
(https://tinyurl.com/Komadori)
React is a JavaScript library for building user interfaces. 
It is maintained by Facebook and a community of 
individual developers and companies. 
React can be used as a base in the development of single-page 
or mobile applications.

Example 2: what is react

React is a JavaScript library for building user interfaces.

It is maintained by Facebook and a community of individual developers and
companies.

React can be used as a base in the development of single-page or mobile
applications.

Example 3: use javascript library in react

class MainView extends Component {
  render() {
    // don't render anything
    return <div/>;
  },

  componentDidMount() {
    // find the DOM node for this component
    const node = ReactDOM.findDOMNode(this);

    // widget does stuff
    $(node).activateMyCoolWidget();

    // start a new React render tree with widget node
    ReactDOM.render(<div>{this.props.children}</div>, node);
  }
});

Example 4: react.js

class ShoppingList extends React.Component {
  render() {
    return (
      <div className="shopping-list">
        <h1>Shopping List for {this.props.name}</h1>
        <ul>
          <li>Instagram</li>
          <li>WhatsApp</li>
          <li>Oculus</li>
        </ul>
      </div>
    );
  }
}

// Example usage: <ShoppingList name="Mark" />